From: David Miller <davem@davemloft.net>
To: netdev@vger.kernel.org
Subject: [PATCH 0/5] rtcache remove respin
Date: Sun, 01 Jul 2012 05:02:43 -0700 (PDT) [thread overview]
Message-ID: <20120701.050243.908285695895815999.davem@davemloft.net> (raw)
It's been a while and there were of course a lot of merge hassles with
the most recent set I posted, so I respun these patches tonight
because I wanted to see the effects of the recent rpfilter hacks on an
rtcache-less system.
On a SPARC T3-1:
1) Output route lookup: ~2800 cycles
2) Input route lookups: ~3000 cycles (rpfilter=0)
~4300 cycles (rpfilter=1)
Another nice part is how small struct rtable is after this patch set:
struct rtable {
struct dst_entry dst;
int rt_genid;
unsigned int rt_flags;
__u16 rt_type;
__be32 rt_dst;
int rt_route_iif;
int rt_iif;
int rt_oif;
__be32 rt_gateway;
u32 rt_peer_genid;
unsigned long _peer;
struct fib_info *fi;
};
which is about 208 bytes on sparc64.
Signed-off-by: David S. Miller <davem@davemloft.net>
next reply other threads:[~2012-07-01 12:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-01 12:02 David Miller [this message]
2012-07-01 12:15 ` [PATCH 0/5] rtcache remove respin David Miller
2012-07-03 10:56 ` David Miller
2012-07-02 10:44 ` Eric Dumazet
2012-07-02 10:59 ` David Miller
2012-07-05 10:15 ` David Miller
2012-07-05 19:03 ` Eric Dumazet
2012-07-05 21:32 ` David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120701.050243.908285695895815999.davem@davemloft.net \
--to=davem@davemloft.net \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).